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Multiple Choice Quiz 1
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Please answer all questions.

1
Are atoms ever created in a chemical reaction?
A)no
B)yes
2
In a chemical equation, on which side are the reactants placed?
A)left side
B)right side
C)the left or right side, depending on the reaction
3
For the following reaction
Na(s) + H2O -> NaOH(s) + H2
what are the coefficients of Na, H2O, NaOH, and H2 in the balanced equation?
A)1,1,2,2
B)2,2,2,1
C)1,1,1,2
D)2,1,1,2
4
When balancing equations, is it proper to use fractional coefficients?
A)no
B)yes
C)when necessary
5
Balance the equation for the reaction between VCl2 and Cl2, which makes VCl5.
A)1 VCl2, 3 Cl2, 2 VCl5
B)3 VCl2, 4 Cl2, 3 VCl5
C)1 VCl2, 2 Cl2, 1 VCl5
D)2 VCl2, 3 Cl2, 2 VCl5
6
Which of the following pairs of chemicals will react?
1) Pb metal and ZnCl2
2) AgNO3 and Na metal
3) Fe2S3 and aluminum metal
A)1, 2 and 3
B)1 and 3
C)1 and 2
D)2 and 3
7
Name the products in the reaction between KHCO3 and HI.
A)KI and H2CO3
B)KH and ICO3
C)KI, CO2, and H2O
8
Balance the following net ionic equation by filling in the coefficients: __ I-(aq) + ___ Fe3+(aq) -> ___ I2(s) + ___ Fe2+(aq)
A)2, 1, 2, 1
B)2, 2, 1, 2
C)4, 1, 2, 1
D)2, 2, 2, 1
9
Find p, q, and r for the following reaction:
m S8 + n O2® l S2O3
A)m=1, n=6, l=4
B)m=2, n=4, l=8
C)m=3, n=18, l=12
D)m=4, n=8, l=16
10
_____ reactions have only one product.
A)simple
B)displacement
C)exothermic
D)combination
11
Which of the following are indications that a chemical reaction has occurred?
A)color change
B)light production
C)formation of solid
D)formation of gas
E)change in temp
F)all of above
12
What is the coefficient of CO2 when the following equation is properly balanced with the smallest set of whole numbers? C4H10 + O2 ---> CO2 + H2O
A)1
B)4
C)6
D)12
E)8
13
According to the solubility rules, which one of the following is soluble in water?
A)BaSO4
B)AgBr
C)Na2S
D)Hg2Cl2
E)CaCO3
14
A combustion reaction
A)normally requires oxygen
B)requires a fuel
C)gives off energy
D)all of the above
E)none of the above







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